No-Bake Super Chewy Chocolate Chip Peanut Butter Oat Bars

"[Photograph: Yvonne Ruperti] Wanna know the secret to seriously chewy oatmeal bars? Marshmallow. Peanuts and chocolate add a great final touch. Notes:The peanut butter and peanuts can be omitted. Replace the nuts with anything of your liking such as crispy rice cereal, coconut, or sunflower seeds. The mixture is cooled before adding the chocolate chips so that they don't melt. The chips may not want to stick into the mixture, however, so just press them in when pressing the mixture into the pan. About the Author: Yvonne Ruperti is a food writer, recipe developer, former bakery owner, and author of The Complete Idiot's Guide To Easy Artisan Bread. You can also watch her culinary stylings on the America's Test Kitchen television show. She presently lives in Singapore working on her new baking cookbook, and as a recipe developer for HungryGoWhere Singapore. Check out her blog: shophousecook.com . Follow Yvonne on Twitter. Every recipe we publish is tested, tasted, and Serious Eats-approved by our staff. Never miss a recipe again by following @SeriousRecipes on Twitter!..."